| 摘要 |
A watercraft comprises two air-intake boxes 5, 8 mounted in air-intake pipes 6, 9 of the engine 1 . The air-intake box 5 is provided on one side of the engine 1 and located lower than a waterline of the watercraft and the air-intake box 8 is provided on the other side of the engine 1 and located higher than the waterline. End portions of the air-intake pipes 6, 9 , which are located downstream in air flow in the air-intake boxes 5, 8 , are connected to upper portions of the air-intake boxes, respectively. The air-intake pipe 6 is provided with a throttle valve 7 . An air-suction valve 12 is adapted to suction air from upstream of the throttle valve 7 and deliver it to the vicinity of an exit of an exhaust port. The air suction valve 12 is provided with a noise absorbing member.
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